Questions tagged [power]

Power is the rate at which energy is supplied or consumed, often measured in Watts. This tag covers electrical power specifically, the voltage and current specifications for supplying power to the Pi, the specifics of power consumption by the Pi, and methods for controlling Pi power consumption.

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raspberry pi 2 model b hdmi no signal

i have a Problem with my raspberry pi 2 model b. it has retropie installed and it used to work fine. Now it says "no signal". What i tried after some research: different cables and monitors ...
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How much powerful solar battery do I need to power the Raspberry Pi 4B at load and charge batteries to enough energy amount to work at night? [closed]

I need Raspberry Pi that will work autonomously long time. I think about solar panel what will power Pi at day and charge batteries for the night work till the next sunrise. So, how much powerful ...
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Reasons the Pico W doesn't work when powered by new CR2032 battery?

Currently connected to GPIO Pins as per guide/datasheet and it's not powering up. Meanwhile I've got another same unit with the same simple setup/circuit except it's powered by 2 AA batteries and it's ...
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Can you use AC to USB DC Converter To Power Pico W?

Can you use these types of converters/adapters to power the Pico W? https://www.aliexpress.com/item/1005002442614617.html More importantly, when you'd look at the specs, what individual evaluation ...
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Power issue: USB 4G Modem via USB Hub

I am hoping to get some advice, below is the hardware I am using, Raspberry Pi Zero 1.7W (Raspbian OS Lite - 2022 Kernel) Ethernet / USB HUB HAT (B) Hologram Nova 4G Modem Initial power tests, I see ...
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Powering 3 sensors from one 5v pin

I am powering 3 different sensor (a temperature sensor, an IR transmitter and an IR receiver) on my Pi. I would like to use the same 5V pin to power all three. I connected a jumper onto the 5v pin, ...
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Raspberry Pi GPIO shutdown/reboot options

There are a number of Questions/Answers about safely shutting down a Pi which offer conflicting advice on shutdown and poweroff. What are the pro/cons of these methods.
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Connect several sim800l with external power supply to the uart of ip4 and floating ground

I am creating a circuit with several sim00l connected to different UARTs each with its own external power. But I'm curious if having other objects like cooler-fan connected to other GND of the rpi ...
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Controlling multiple servo motors on rpi 4

Do I need a hat module for my raspberry pi to control 6 servos? I’ll be using an external power source.
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Power two rpi4 using a power supply with 5v 6a output?

Maybe a dummy question: Can I power two rpi4 using a single power supply with 5v 6a output? Would this still be delivering 5v 3a ti each board ? Thx Nuno
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Monitoring power consumption of a Raspberry Pi 3B+ device

I am wondering if it is possible to measure the power being consumed by the CPU core (ARM chip) of a Raspberry Pi? Specifically, I want to monitor this power consumption for various applications that ...
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Do I need a on and off button for my power supply?

I purchased this power supply https://www.raspberrypi.com/products/type-c-power-supply/. It’s the official power supply so I thought it would be good. Now I am hearing all these stories about what ...
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How to disable boot when plugged to power? [duplicate]

I want to disable boot of raspberry pi 4B when plugged to power I have searched a lot and found a similar question, which gives a short and suspicious answer to this problem. If two RUN pins(holes) ...
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Make case fans work RaspberryPi4

I've loaded my RPi4 with CentOS7 I also bought a case with fans that you can attach to the pins on the pi. I'm not sure where to start looking for the software modifications I need to make in order to ...
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Using a PD USB hub for power and data for Pi 4

I want to use a 7" LCD (not the official Pi 7" LCD) together with the Pi 4. According to the LCD documentation, it requires 2A. I was planning initially to power the LCD through one Pi. Now ...
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Use powered USB hub for peripherals and power

I want to run an external HDD on a Pi (currently a first-generation model, I might replace it with a Pi 3 in the future). The drive has no extra power supply apart from its USB port. Just plugging the ...
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How do I diagnose GPIO issues?

I was soldering LEDs in an extended line the other day when I accidentally forgot to shut my Raspberry Pi 4 off. I continued to solder and soon enough shorted my Pi out. It rebooted quickly and all ...
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3 12V DC motors on raspberry pi with L298N

Completely new to this stuff. For context, I am trying to connect 3 DC motors that probably are 12v. I haven't bought them yet, they will definitely be more than 5v. I want to be able to control all ...
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Problems powering a 3B+ with 7” touchscreen

I’m trying to create a battery-powered RPi 3B+ system and am running into issues almost immediately due to the Pi’s power requirements. I’m testing using a 5V 3A wall power supply which is running ...
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LPM raspberry pi 4B extinction mechanism

I am contacting you because I would like to know how the LPM (Low Power Mode) mechanism works on the raspberry pi 4B. In order to take advantage of this feature, according to the documentation put ...
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How to shut down the RPI4 for a certain time or prevent it to turn on power on booting

For my project, I access the RPI remotely. The RPI continuously powers sensors over its 3.3vdc rail. For testing & troubleshooting, I would like to cut current to those sensors for some time. ...
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Pi 4, Hifiberry, and touchscreen power

I recently finished my basement and am in the process of getting it all configured, and one thing I wanted was to build a Raspberry Pi streaming device. I got a 3D printer for Christmas and found this ...
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Calculating power adapter needs for my Compute Module 4 setup

So I'm finding it a little difficult to figure out how I should be powering my setup. I'll have Waveshares IO board here: https://www.amazon.com/gp/product/B08VJBGD1Q/ref=...
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Constant 3V3 to GPIO output behavior

I am new to circuit design, and I have some questions about a circuit I'm seeing in a raspberry pi starter kit. I think my questions is elementary, but I am having trouble finding an answer due to my ...
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Can I turn On and Off my Raspberry Pi 3B+ on a specific time?

I have my Raspberry Pi 3B+ powered via Solar Panel. And I know that Raspberry Pi especially 3B+ have low power consumption unlike any other Raspberry Pi version. Though Power Consumption was not that ...
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Raspberry Pi 4B power consumption headless with constant usage

I'm setting up my Raspberry Pi 4b 2GB RAM in headless mode with a 64-bit Raspberry Pi OS Lite. It won't have anything plugged into it, but for an ethernet cable. It'll be performing FAH tasks (...
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SD card isn't being detected by raspberrypi 3 B+ or my laptop

Raspberrypi 3 B+ was working yesterday, had the raspbian image flashed onto it and I was able to ssh into it headless from my laptop with no major issues. However, today it didn't boot up, so I ...
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Most energy efficient way to perform periodic tasks on RPI ZERO W

I would like to make my Rpi Zero W execute a simple task (which takes an insignificant fraction of time to perform, <1s) using inputs from sensors exactly f times a day. I am wondering whether: ...
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How to turn on a remote battery-operated Raspberry Pi (accessible by Wifi or SSH)?

I am running a cluster of Pi3 and Pi4. Each node runs on a battery and is powered by a solar panel, in a remote area like a farm with no grid. Pis are connected to each other by WiFi in a local ...
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Turn off external harddrive bay

I have an IcyBox external hard drive bay with a fan, which is quite noisy. Seems like you cannot completely turn off the fan, even when the harddrives are all suspended. However, when I shutdown the ...
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Delay booting devices or booting the kernel

BLUF: I'd like to see if there's a solid way to delay the boot-up of the kernel to keep a Pi from sucking up a lot of juice out of the gate, or the USB bus to delay the devices' boot-up until after ...
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Powering a Pi 4 with a small power bank [duplicate]

For my project SamplerBox, I had done many extensive tests in the past and it was possible to successfully power a RPi 2 for multiple hours with such a small 2600mAh power bank (18650-battery inside), ...
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how to detect human presence at the computer

After working from home for a while, I bought a standing desk that can move up and down. I'd like to have better understanding of my work patterns, especially these 2 metrics: how much time do I ...
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Raspberry Camera turns off everytime I pull the plug to restart

I'm using ivport-v2 and followed the guide to get my camera running. Went in sudo raspi-config enabled I2C and Camera, then reboot and everything works fine. However, when I pull the plug on my RPi it ...
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Is there any advantage powering up a RPi 4B with a PSU rated for 8A @ 5V?

I have a Raspberry Pi 4B 4GB RAM variant that will be running 24/7 with the following attachments: an ethernet cable leading to a router for internet connectivity a 2.5" external HDD attached ...
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4 answers
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Low voltage warning powering Raspberry by means of power bank

I'm trying to power my Raspberry 3 model B by means a Catlyn Power Bank 10000mah just purchased and seems to work fine with an iPhone 11. The problem is that when I connect it to Raspberry, even if ...
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Power Monitoring Physics Experiment

Hi i am just planning a Physics experiment where i accelerate Ionized Gases onto a target sample. For this Experiment i need to monitor the power constantly over a week or longer. For my later data ...
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1 vote
3 answers
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Is It Safe To Connect A 16 Port Servo Driver's External Power Supply To My Raspberry Pi? (Will It Cause A Brownout?)

I have an adafruit 16 port servo driver. In the directions on their webpage, they explain how to wire it, as well as connect an external power supply. They mention not to plug the power directly into ...
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Does the power port of the Raspberry Pi 3a+ have lines for transfering data?

Im getting a Pimoroni Power On Off Shim for my Pi 3a+ and wonder if i could use the original power micro USB-port for data stuff, like connecting a 3D printer or a webcam - since the 3a+ lacks ...
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Is it possible to connect multiple WS2812 LED Strips to a Raspberry Pi 3?

im new to the Raspberry Pi in general and followed this tutorial https://dordnung.de/raspberrypi-ledstrip/ws2812 to control a single LED Strip. I was wondering if it was possible two control a second ...
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Bespoke Power Supply cable issue

I am trying to create an in-car (headrest) entertainment system using the Pi 3B with 7" screen using OSMC, when OSMC is shutdown it does not fully power off the screen, I can detect the shutdown ...
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Can't wakeup Raspberry Pi if unused for more than a day

I'm using Raspberry Pi to run Onion Share and ProtonVPN on a CanaKit Raspberry Pi 4. I check it once a day. Moving the mouse wakes it up. But if I miss a day, moving the mouse does not wake it up. ...
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Raspberry Pi Pico 5V output using VBUS?

there! I'm planning to use the Raspberry Pi Pico for a project and I'll be using a SCA60c tilt sensor with it. I know that the Pico only has a 3.3V output but the SCA60C needs 5V to power it. I was ...
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Is there a risk for the rpi to be under powered?

I power my RPi 3 from a Meross strip and I often get the small yellow lightning bolt in a corner that indicates that the RPi is underpowered. I know that this can lead to all sorts of issues with the ...
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Arduino nano connected to raspberry pi with external power causes display blackout

I am trying to prototype a circuit involving an Arduino nano, using a raspberry pi (on which I am typing this question). I have connected the nano to a 9V DC power supply via its Vin pin, with GND ...
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Best way to power Pi CM4 and Harddrives

I'm trying to create a NAS that I can just power off a single 12v power supply. I'm using the RPi CM4 because I have the PCIE Gen 2 that I can run a SATA controller off of. Option A) My initial ...
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How can I short GPIO3 when external 5v power is switched off?

Background: I have my RPi running connected to a small UPS. This works fine when the power goes out for a short time, but I want to have the Pi power down when the power is off and it's running from ...
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Pi 5V Pin Max Current Before Melting Happens?

I have a hypothetical project in mind I would like to pursue but wanted to ask this before sinking too much time into it. That being having multiple SPI slaves connected to a Pi Zero. From what I've ...
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1 vote
3 answers
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power the logic circuit of an external component with an external power supply instead of the raspberry pi's GPIO

I want to know if is it possible to power the logic circuit of an external component used with raspberry pi not in the way shown below (using the 3.3v or 5v ang GRND GPIO), but with an external 3.3v ...
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Could a raspberry pi pico power a PC fan

I have recently soldered a 90mm PC fan to a USB cable and it works great. I was wondering if it would be possible to power said fan off of the 5v output pin on the pico, and solder the black wire to ...
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